TY - JOUR
T1 - Uptake, translocation and metabolism of decabromodiphenyl ether (BDE-209) in seven aquatic plants
AU - Deng, Daiyong
AU - Liu, Jin
AU - Xu, Meiying
AU - Zheng, Guolu
AU - Guo, Jun
AU - Sun, Guoping
N1 - Funding Information:
The authors acknowledge the Natural Science Foundation of Guangdong Province ( S2011040000770 ), Station Foundation of Guangdong Province Academy of Sciences ( sytz201009 ). In addition, Dr. Hwei-Yiing Johnson kindly improved the manuscript with respect to language corrections.
Publisher Copyright:
© 2016 Elsevier Ltd.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - Terrestrial plant uptake of PBDEs from contaminated soils has been widely reported recently. In this study the fate of deca-BDE within a plant/PBDEs/aquatic environment system was investigated through simulated pot experiments. Accumulations of the total PBDEs and deca-BDE were observed in tissues of seven test aquatic plant species, namely Phragmites australis, Cyperus papyrus, Alternanthera philoxeroides, Colocasia esculenta, Scirpus validus, Acorus calamus and Oryza sativa. In all seven plants, O. sativa leads the uptake and accumulation both in the total PBDEs (444.8 ng g-1) and deca-BDE (368.0 ng g-1) in roots. Among the six common phytoremediation aquatic plants, A. calamus leads the uptake (236.2 ng g-1), and P. australis leads the translocation (Cshoot/Croot = 0.35), while A. philoxeroides (43.4%) and P. australis (80.0%) lead in the metabolism efficiencies in the root and shoot, respectively. The detection of seventeen lesser brominated PBDE congeners provided the debromination evidence, and the specific PBDEs profiles in test plant species indicated there is no common metabolic pattern. Furthermore, a relative high proportion of lesser brominated PBDE congeners in shoots suggested the possible metabolic difference between roots and shoots. Finally, a noticeable percentage of penta- and octa-BDE derived from deca-BDE also hint the ecological risk in deca-BDE use. This comparative research on the aquatic plants provide a broad vision on the understanding of plant/PBDEs/aquatic environment interaction system, and may be applied to remediate PBDEs in contaminated waters and sediments.
AB - Terrestrial plant uptake of PBDEs from contaminated soils has been widely reported recently. In this study the fate of deca-BDE within a plant/PBDEs/aquatic environment system was investigated through simulated pot experiments. Accumulations of the total PBDEs and deca-BDE were observed in tissues of seven test aquatic plant species, namely Phragmites australis, Cyperus papyrus, Alternanthera philoxeroides, Colocasia esculenta, Scirpus validus, Acorus calamus and Oryza sativa. In all seven plants, O. sativa leads the uptake and accumulation both in the total PBDEs (444.8 ng g-1) and deca-BDE (368.0 ng g-1) in roots. Among the six common phytoremediation aquatic plants, A. calamus leads the uptake (236.2 ng g-1), and P. australis leads the translocation (Cshoot/Croot = 0.35), while A. philoxeroides (43.4%) and P. australis (80.0%) lead in the metabolism efficiencies in the root and shoot, respectively. The detection of seventeen lesser brominated PBDE congeners provided the debromination evidence, and the specific PBDEs profiles in test plant species indicated there is no common metabolic pattern. Furthermore, a relative high proportion of lesser brominated PBDE congeners in shoots suggested the possible metabolic difference between roots and shoots. Finally, a noticeable percentage of penta- and octa-BDE derived from deca-BDE also hint the ecological risk in deca-BDE use. This comparative research on the aquatic plants provide a broad vision on the understanding of plant/PBDEs/aquatic environment interaction system, and may be applied to remediate PBDEs in contaminated waters and sediments.
KW - Deca-BDE
KW - Fresh water
KW - PBDEs
KW - Phytoremediation
KW - Sediment
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U2 - 10.1016/j.chemosphere.2016.03.013
DO - 10.1016/j.chemosphere.2016.03.013
M3 - Article
C2 - 26994429
AN - SCOPUS:84960905430
SN - 0045-6535
VL - 152
SP - 360
EP - 368
JO - Chemosphere
JF - Chemosphere
ER -